Head-gate.



K. J; THORSBY.

HEAD GATE. APYLIOATION FILED APR- .19. 1911.

Patent ed June 6, 1911.

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K. J. THORSBY.

HEAD GATE.

' APPLICATION FILED APR.19.1911.

- Patented June 6, 1911.

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UNITED STATES PATENT OFFICE.

KARL JOI-IAN THORSBY, OF OAKLAND, CALIFORNIA, 'ASSIGNOR T'O CALIFORNIACOR- RUGATED CULVERT COMPANY, OF OAKLAND, CALIFORNIA, A CORPORATION OFCALIFORNIA.

Specification of Letters Patent.

HEAD-GATE.

Patented June 6, 1911.

Application filed A ril 19, 1911. Serial No. 622,075.

To all whom it may concern:

Be it knownthat I, KARL J OHAN THoRsBY, a subject of the King of Norway,residing at Oakland, in the county of Alameda and State of California,have invented certain new and useful Improvements in Head- Gates, ofwhich the following is a specification.

My invention relates to the class of headgates for controlling the flowof water from reservoirs, canals, and the like.

The objects of my invention are to simplify the construction in. amanner that will result in reducing the machine work or machinefinishing to a minimum, thereby reducing the cost of manufacture; alsoto provide simple and effective means for attaching the head-gate to theend of metallic pipes; and also to provide a novel and simpleconstruction of the lifting means, adaptingthe gate for a lever or ascrew adjustment according to the requirements of the case.

With these ends in view, my invention consists in the novel head-gatewhich I shall now fully describe and claim, by reference to theaccompanying drawings, in which Figure 1 is a front view of thehead-gate. Fig. 2 is a side elevation, partly in. section, of the same.Fig. 3 is a side view of-the lever attachment which may be substitutedfor the screw attachment of Figs. 1 and 2, as the means for operatingthe gate. Fig. 4 is a front view'of the lever attachment" of Fig. 3.

1 is a pipe-section which forms the gatecarrier, the forward end ofsaid'section be ing beveled to receive the gate 2 and to constitute theseat therefor. The rear end of the pipe-section 1 is formed with aflange 3 which is secured by bolts 4 to a flange 5. The flange 5 is anindependent ring, its inner surface or surface of lesser diameter beingshaped to conform to the outer surface of pipe 6 over which it isfitted, whichpipe is the conduit which the gate is to control. In thepresent instance, I have shown the conduit pipe 6 as of the corrugatedmetallic type, and said independent flange 5 is, therefore, shaped toconform, as indicated at 7 in Fig. 2, to the corrugations of said pipe6,

against the bent end 8 of the and the end of said pipe 6, as shown at 8,is

bent over the flange 5 and is seated in a recess 9 formed in the face ofsaid flange. A packing 10, preferably a square packing, is set in agroove in the adjacent face of the pipe-section 1, and is tightlyclamped up conduit pipe 6, by the bolts 4, thus not only securingtogether the pipe-section 1, the flange 5, and the conduit pipe 6, butalso making a watertight joint between the gate structure and theconduit pipe.

The gate 2 is hinged at its upper portion to the pipe-section 1, bymeans of a hinge pin 11, whichpasses through lugs 12 formed on the rearflange 3 of the pipe-section 1,

and through intervening ears 18 on the gate gate, thus making awatertight gate seat without having the face of the plpe section 1machine finished. The gate is kept tight by the pressure of the water,and the greater this pressure the tighter the joint.

' In order to lift the gate and to adjust it in any desired position,means are provided looking to the use of either a screw lift or a leverlift, or the substitution of one for the other. The lower portion of thegate on its outer face is formed with a lug 15 to which is pivotallyconnected a link 16.

In some suitable overlying position is a timber 17 to which is secured abracket 18, formed with a forwardly projecting arm 19 and a rearwardlyprojecting lug 20.

21 is a pull rod. When the lifting means are to depend on screw action,the upper end of the rod 21 is threaded as shown in Figs.

'1 and 2 at 22. This threaded portion engages a nut 23 hinged by a pin24 in the end of the bracket arm 19, and the upper end of the rod has ahand wheel 25. The lower end of the rod is fitted to the link 16 by apull collar 26, as seen in Fig. 1. The dotted lines in Fig. 2 show theposition of parts in opening the gate, which operation is effected byturning the pull rod 21.

When a lever is to be used as the means for opening the gate, theconstruction is as shown in Figs. 3 and 4:. The nut 23 and the screwpull rod 21 with its foot link 16 of Figs. 1 and 2 are removed. In thebracket arm 19 is pivoted at its angle an angle-lever 27, to the shortarm of which is booked the bent end of a pull rod :28. The lower end ofthe pull rod 28 is to be bent also and to hook into the lug 15 of thegate 2. Pivoted to the rear lug 20 of the bracket 18 is an adjusting bar29 formed with a series of notches 30. The lever 27 carries a holdingstud 31, which according to the relative positions of the lever and theadjusting bar 29, is adapted to enter and engage any of the notches ofsaid bar, thereby locking the lever in various positions and adjustingthe flow of water. 32 is a handle for convenience in manipulating theadjusting bar 29. The dotted lines in Fig. 3 show the position of thelower and adjusting bar when the gate is open for the maximum. flow.

Having thus described my invention what I claim as new and desire tosecure by Letters Pat-ent is- 1. In a head-gate, the combination of apipe sect-ion forming the gate carrier, said pipe section having aflange at its rear end; a gate hinged to said pipe section and adaptedto seat against its forward end; a conduit pipe; an independent flangeconforming to and encircling the conduit pipe, the said pipe having itsend bent over the face of the independent flange; and bolts clamping theflange of the pipe section and the independent flange of the pipeconduit together.

2. In a head-gate, the combination of a pipe section forming the gatecarrier, said pipe section having a flange at its rear end; a gatehinged to said pipe section and adapted to seat against its forward end;a conduit pipe; an independent flange conforming to and encircling theconduit pipe, the said pipe having its end bent over the face of theindependent flange, and lying in a recess therein; packing fitted in theinner end of the pipe section and seating against the bent end of theconduit pipe; and bolts clamping the flange of the pipe section and theindependent flange of the pipe conduit together and forming a watertight joint between the gate structure and the conduit 1 In a head-gate,the combination of a pipe section forming the gate carrier, said pipesection having a flange at its rear end; a gate hinged to said pipesection and having packing fitted in its inner face adapted to seatagainst the forward end of said pipe section to form a water tightpressure joint therewith; a conduit pipe; an independent flangeconforming to and encircling the conduit pipe, the said pipe having itsend bent over the face of the independent flange, and lying in a recesstherein; packing fitted in the inner end of the pipe section and seatingagainst the bent end of the conduit pipe; and bolts clamping the flangeof the pipe section and the independent flange of the pipe conduittogether and forming a water tight joint between the gate structure andthe conduit pipe.

4. In a head-gate, the combination of a gate hinged at its upper portionto its conduit connections and having a lug on the outer face of itslower portion; an independent fixed bracket, a pull-rod pivotallyconnected at its lower end with the lug of the gate; and means,pivotally connected with the fixed bracket, for lifting and loweringsaid pull rod.

5. In a head-gate, the combination of a gate hinged at its upper portionto its conduit connections and having a lug on the outer face of itslower portion; an independent fixed bracket having a forwardlyprojecting arm and a rear lug; a pull-rod pivotally connected at itslower end with the lug of the gate; and means, pivotally connected withthe arm of the fixed bracket, for lifting and lowering said pull rod.

6. In a head-gate, the combination of a gate hinged at its upper portionto its conduit connections and having a lug on the outer face of itslower portion; an independent fixed bracket having a forwardlyprojecting arm and a rear lug; a pull rod pivotally connected at itslower end with the lug of the gate; an angle lever pivoted in the arm ofthe fixed bracket and having a pivotal connection with the upper end ofthe pull rod; a notched adjusting bar pivoted in the lug of the fixedbracket; and a holding stud on the angle lever to engage the notches ofthe adjusting bar.

7 In a head-gate, the combination of a pipe section forming the gatecarrier, said pipe section having a beveled front; means for connectingthe rear end of said pipe section with the conduit pipe; a gate hingedat its upper portion to the pipe section and adapted to seat against thebeveled front of said section, said gate having a lug on the outer faceof its lower portion; an independent fixed bracket; a pull-rod pivotallyconnected at its lower end with the lug of the gate; and means,connected with the fixed bracket, for lifting and lowering said pull ro8. In a head-gate, the combination of a pipe section forming the gatecarrier, said pipe section having a beveled front; means for connectingthe rear end of said pipe section with the conduit pipe; a gate hingedat its upper portion to the pipe section and adapted to seat against thebeveled front of said section, said gate having a lug on the outer faceof its lower portion; an independent fixed bracket having a forwardlyprojecting arm and a rear lug; a pull rod pivotally connected at itslower end with the lug of thegate; an angle lever pivoted in Intestimony whereof I have signed my the arm of the fixed bracket andhaving a name to this specification in the presence of pivotalconnection With the upper end of two subscribing Witnesses.

the pull rod; a notched adjusting bar pivoted KARL J OHAN THORSBY. 5 inthe lug of the fixed bracket; and a holding Witnesses:

stud on the angle lever to engage the notches H. W. FORCE,

of the adjusting bar. ROBERT B. GAYLORD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

